Shock absorbing latching device



Nov. 2, 1937. G. CDQ ALL I 2,097,596

SHOCK ABSORBING LATCHING DEVICE Filed March 9, 1937 3/ 30 a. v I I I /7 I 5026 7 l .5" 3

Patented Nov. 2, 1937 t -1.5961" sHocK'ABsonBrnG L 'rcHrNG DEVICE U George FaMcDbilgalhPortland, O reg; assignor V Textile Machines, -Inc., Bortland, i ,Qreg a corporation of Oregon to Oregon Ljff i Claims. (01. 38-1 63),

- This invention relates to latching devices whereaheavy piece of equipment is'moved under considerable velocity as in. automatic or semi- H automatic machinery,.to register :with another piece of machinery. .fo'r. a second step of a'mechanical processing. It" was developed for a modification of the garment pressing machine according to the George I-I.1Rawlinson invention, Serial No. 52,366, filed Nov. 30, 1936.

In its application on the press, a plurality of bucks weighing more than 100 pounds each, are moved into and out of pressing relationship with pressing jaws. To get production they must be moved rapidly and be brought to rest in precise registration. This involves a shock absorbing device, that will function to stop the heavy moving part by letting it run somewhat too far in overcoming a spring or the equivalent, which spring instantaneously returns it to the position required and holds it accurately in correct position.

The objects of the invention are therefore'a latching device in sorber wherein the shock absorber does not impair the accuracy of position ofa latched part. A further object is a structure of the character indicated that is rugged and can be made cheaply without slides, dash-pots and other multiple appliances that increase the cost and impair reliability.

The foregoing and other objects that will be apparent from this specification and the structures and combinations pointed out in the claims; define the invention and its purpose.

I accomplish the objects by the structures illustrated in the accompanying drawing, in which,-

Fig. I is a side elevation of the device, showing certain parts in dotted outline that cooperate with it and indicating both operated and normal position of certain parts;

Fig. II is a top view of Fig. projection; and

Fig. III is a view from the right hand end of Fig. 11.

In the drawing, l is a base that will be securely attached to a relatively fixed part such as a machine base, 2 and 3 are standards made integral with the base I. 1

A pair of lugs, 4 and 5, are made integral with the standard 3 and a similar pair of lugs comprise the standard 2, hence are not designated by a separate indicating numeral.

The lugs are bored for close fitting pins 4a and 2m, and a jaw 6, provided with a jackknife I in orthographic combination with a shock aboutline and moves as indicated by the arrow,

joint I, ispivotallyxconnected by the pin laand isi-maintainedinithe position shown in vfull lines" by the'ten'sion spring 8-,=at1- .tached by one" fend' 'to the lug 9, -made integral withlthe standard 3 and bythe'other endxto the lug lll'made integral-with-thejaw 16,. .Actionxof the spring; 8 is ,limited, by the jackknife jointfl. A jaw thatis similar. to the jaw 6 is oppositely disposed, thereto, designated-. byithe numeral :l;| to define a latching space therebetween, cated by l2.

The jaw H is pivoted to the top of-a link l3 by the pin [4 and is urged to the position shown infull lines by the springfli attached in like manner as the spring 8 to lugs. I6 and; I1 and serving the same purpose for the jaw H as that described for thejaw 6. A jackkniie joint I8 is also provided to limit the action of the spring Hi.

The link standard 2 by the pin 2a'and serves alsoas a,

t5 the senate- 3 indi- 1 [3 is pivotally connected to the movable distance piece to hold the-jaws B and -II in the same plane.

Fig. I, and embodies a latch member 2|. When the buck carriage 20 moves, the latch 2| will depress the jaw 6 and contact the'jaw ll, usually with some violence. "Since the point of contact. is above the centerline of the pin'Mand the jackknife joint prevents other relative movement, the jaw II and the link I3 yield, the latter pivoting on the pin 2a,, which movement is resisted by the reach-rods 22 and 23, pivotally connected to the'link l3 by ierred by these reach-rods to the compression springs 25 and 26 so that the shock of contact is resiliently transferred tothe standard 3.

Lugs 6a and Ila are made integral with the jaws 6 and H and in part span the space I2, being grooved on their opposed faces to accommodate the release rod 21, provided with the lug 28 and which is adapted to be operated by the tension rod 29 which attaches a treadle or the like that is effective to make a selective movement of the beam 30, this beam being pivotally attached at one end by the pin 3| to the standard 2 and having an engaging device such as that shown at 32 so that its movement under the influence of the tension rod 29 is expressed as a vertical movement, in the appropriate direction, of the release rod 21.

When the latch 2| contacts the jaw 6, it will be depressed as shown in dotted outline, with-f A buck carriage is indicated at zoiin dotted the pin 24 and transout in any manner affecting the jaw II which jaw II, when the without resistance.

A number of parts shown have not been designated by reference numerals or described, but their purpose is so obvious from the drawing that this is thought unnecessary.

When the carriage 20 and its latch 2| con- H will yield by cans ing compression of the springs 25 and 26 and I these will reassert themselves immediately to tact the jaw II, the latter 2. In a latching device of the character described, a base, fixed and pivoted standards normal to the base, jaws pivotally mounted on the means '&and springxsustained to resiliently ab- 25 sorb shock applied. .to the jaw mounted thereon.

GEORGE Mcno GALn 

